Analysis system for analysing the condition of a machine

• US 20050071128A1
• Filed: 01/20/2003
• Published: 03/31/2005
• Est. Priority Date: 01/18/2002
• Status: Active Grant

• Current Assignee: S.P.M. Instrument AB
• Original Assignee: S.P.M. Instrument AB
• Inventors: Lindberg, Stefan, Lindberg, Jarl-Ove, Kummelstam, Jim, Hedlund, Hakan
• Granted Patent: US 7,167,814 B2
• Time in Patent Office: Days
• US Class Current: 702/187
• CPC Class Codes: G01H 1/003 of rotating machines G01H1/10 takes precedence
• CPC Class Codes: G01H 1/14 Frequency
• CPC Class Codes: G01H 1/16 Amplitude
• CPC Class Codes: G01M 1/28 with special adaptations for determining imbalance of the body in situ, e.g. of vehicle wheels
• CPC Class Codes: G01M 13/028 Acoustic or vibration analysis
• CPC Class Codes: G01M 13/045 Acoustic or vibration analysis
• CPC Class Codes: G01M 15/04 Testing internal-combustion engines
• CPC Class Codes: G01M 15/048 by monitoring temperature
• CPC Class Codes: G01M 15/12 by monitoring vibrations
• CPC Class Codes: G05B 23/0221 Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
• CPC Class Codes: G07C 3/00 Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
• CPC Class Codes: G07C 3/08 Registering or indicating the production of the machine either with or without registering working or idle time
• CPC Class Codes: G07C 3/10 using counting means
• CPC Class Codes: G07C 9/27 with central registration
• CPC Class Codes: G07C 9/33 by means of a password

Abstract

An apparatus for analysing the condition of a machine, comprising: at least one input for receiving measurement data from a sensor for surveying a measuring point of the machine; data processing means for processing condition data dependent on said measurement data; said data processing means comprising means for performing a plurality of condition monitoring functions (F1, F2, Fn); and a logger for registering use of at least two of said condition monitoring functions (F1, F2, Fn); wherein said logger is adapted to register use of a first condition monitoring function a first rate; and said logger is adapted to register use a second condition monitoring function at a second rate.

Claims

1. An apparatus for analysing the condition of a machine, comprising:

at least one input for receiving measurement data from a sensor for surveying a measuring point of the machine;

data processing means for processing condition data dependent on said measurement data;

said data processing means comprising means for performing a plurality of condition monitoring functions(F1, F2, Fn); and

a logger for registering use of at least two of said condition monitoring functions (F1, F2, Fn);

wherein said logger is adapted to register use of a first condition monitoring function a first rate; and

said logger is adapted to register use a second condition monitoring function at a second rate.

2. The apparatus according to claim 1, wherein said second rate is such that use registered at said second rate causes a higher cost per unit of usage than use registered at said first rate.

3. The apparatus according to claim 1, wherein said second rate is such that use registered at said second rate causes a lower cost per unit of usage than use registered at said first rate.

4. The apparatus according to claim 1, wherein:

said registered use is a parameter indicative of a number of executions of at least one of said condition monitoring functions (F1, F2, Fn).

5. The apparatus according to claim 1, wherein:

said registered use is a parameter indicative of an extent of time.

6. The apparatus according to claim 1, wherein said plurality of condition monitoring functions (F1, F2, Fn) includes two or three or more functions selected from the group consisting of:

vibration analysis, temperature analysis, shock pulse measuring, spectrum analysis of shock pulse measurement data, Fast Fourier Transformation of vibration measurement data, graphical presentation of condition data on a user interface, storage of condition data in a writeable information carrier on said machine, storage of condition data in a writeable information carrier in said apparatus, tachometering, imbalance detection, misalignment detection.

7. The apparatus according to claim 1, wherein said plurality of condition monitoring functions (F1, F2, Fn) includes a function for imbalance detection.

8. The apparatus according to claim 1, wherein said plurality of condition monitoring functions (F1, F2, Fn) includes a function for balancing.

9. The apparatus according to claim 1, wherein said plurality of condition monitoring functions (F1, F2, Fn) includes a function for misalignment detection.

10. The apparatus according to claim 1, wherein said plurality of condition monitoring functions (F1, F2, Fn) includes a function for alignment.

11. The apparatus according to claim 1, further comprising means for causing a user interface to indicate when use is registered at said first rate.

12. The apparatus according to claim 1, further comprising means for causing a user interface to indicate when use is registered at said second rate.

16. The apparatus according to claim 1, wherein:

said registered use is a parameter indicative of a number of executions of at least one of said condition monitoring functions (F1, F2, Fn).

13. An apparatus for analysing the condition of a machine having a rotating shaft, comprising:

at least one input for receiving measurement data from a sensor for surveying a measuring point of the machine;

said measurement data being dependent on rotation of said shaft;

data processing means for processing condition data dependent on said measurement data;

said data processing means comprising means for performing a plurality of condition monitoring functions (F1, F2, Fn);

a logger for registering use of at least one of said condition monitoring functions (F1, F2, Fn) ; and

means for reading a current value of said registered use;

means for comparing said current value with a reference value;

wherein said logger is adapted to register use at a first rate when said current value is above the reference value; and

said logger is adapted to register use at a second rate when said current value is below the reference value.

14. The apparatus according to claim 13, wherein said second rate is such that use registered at said second rate causes a higher cost per unit of usage than use registered at said first rate.

15. The apparatus according to claim 13, wherein aid second rate is such that use registered at said second rate causes a lower cost per unit of usage than use registered at said first rate.

17. The apparatus according to claim 13, wherein:

said registered use is a parameter indicative of an extent of time.

18. The apparatus according to claim 13, wherein said plurality of condition monitoring functions (F1, F2, Fn) includes two or three or more functions selected from the group consisting of:

vibration analysis, temperature analysis, shock pulse measuring, spectrum analysis of shock pulse measurement data, Fast Fourier Transformation of vibration measurement data, graphical presentation of condition data on a user interface, storage of condition data in a writeable information carrier on said machine, storage of condition data in a writeable information carrier in said apparatus, tachometering, imbalance detection, misalignment detection.

19. The apparatus according to claim 13, wherein said plurality of condition monitoring functions (F1, F2, Fn) includes a function for imbalance detection.

20. The apparatus according to claim 19, wherein said plurality of condition monitoring functions (F1, F2, Fn) includes a function for balancing.

21. The apparatus according to claim 13, wherein

said plurality of condition monitoring functions (F1, F2, Fn) includes a function for misalignment detection.

22. The apparatus according to claim 21, wherein said plurality of condition monitoring functions (F1, F2, Fn) includes a function for alignment.

23. The apparatus according to claim 13, further comprising means for causing a user interface to indicate when use is registered at said first rate.

24. The apparatus according to claim 13, further comprising means for causing a user interface to indicate when use is registered at said second rate.

25. The apparatus according to claim 13, wherein said logger is adapted to register use of at least two of said condition monitoring functions (F1, F2, Fn);

and wherein said logger is adapted to register use of a first condition monitoring function a third rate; and

said logger is adapted to register use a second condition monitoring function at a fourth rate, said fourth rate deviating from said third rate.

26. The apparatus according to claim 25, wherein said fourth rate is such that use registered at said fourth rate causes a higher cost per unit of usage than use registered at said third rate.

27. The apparatus according to claim 25, wherein said fourth rate is such that use registered at said fourth rate causes a lower cost per unit of usage than use registered at said third rate.